满分5 >
高中数学试题 >
已知函数f(x)=,若f(a)=,则实数a的值为( ) A.-1 B. C.-1...
已知函数f(x)=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101223845269004300/SYS201311012238452690043002_ST/0.png)
,若f(a)=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101223845269004300/SYS201311012238452690043002_ST/1.png)
,则实数a的值为( )
A.-1
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101223845269004300/SYS201311012238452690043002_ST/2.png)
C.-1或
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101223845269004300/SYS201311012238452690043002_ST/3.png)
D.1或-
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101223845269004300/SYS201311012238452690043002_ST/4.png)
考点分析:
相关试题推荐
已知i是虚数单位,复数Z与复平面内的点(2,-1)对应,则复数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101223845269004300/SYS201311012238452690043001_ST/0.png)
对应的点在( )
A.第一象限
B.第二象限
C.第三象限
D.第四象限
查看答案
设全集U={1,2,3,4},集合P={1,2],Q={1,3},则P∪(∁
UQ)=( )
A.{1}
B.{2}
C.{4}
D.{1,2,4}
查看答案
如图,A、B、C、D都在同一个与水平面垂直的平面内,B、D为两岛上的两座灯塔的塔顶.测量船于水面A处测得B点和D点的仰角分别为75°,30°,于水面C处测得B点和D点的仰角均为60°,AC=0.1 km.试探究图中B,D间距离与另外哪两点间距离相等,然后求B,D的距离(计算结果精确到0.01 km,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101223756886163185/SYS201311012237568861631020_ST/0.png)
≈1.414,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101223756886163185/SYS201311012237568861631020_ST/1.png)
≈2.449).
查看答案
已知点P是圆x
2+y
2=16上一个动点,点A是x轴上的定点,坐标是(12,0),当点P在圆上运动时,求线段PA的中点M的轨迹方程.
查看答案
Y已知p:|1-
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101223756886163185/SYS201311012237568861631018_ST/0.png)
|≤2,q:x
2-2x+1-m
2≤0(m>0).若“非p”是“非q”的必要而不充分条件,求实数m的取值范围.
查看答案